Suppose that you were selected for a "Survivor"-type TV show. To help keep your group connected, you suggest that long vines can be tied together and used to transmit signals in cases of emergency. To get the signals to travel faster, you should

A. select lighter vines.
B. increase the tension on the vines.
C. hang weights from the vines at evenly spaced intervals.
D. do all of the above.
E. do (a) or (b) above, preferably both.


Answer: E

Physics & Space Science

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Match the words in the left-hand column to the appropriate blanks in the sentences in the right-hand column. Use each word only once.

Saturn, Earth, Mars, Venus, Uranus, Mercury, Jupiter, Neptune

1. ____________ has a rotational axis that is tilted so much it lies nearly in the plane of its orbit.

2. ____________ is the planet with the highest average surface temperature.

3. The planet that orbits closest to the Sun is __________.

4. The only rocky planet to have more than one moon is ___________.

5. ___________ is the jovian planet that orbits closest to the Sun.

6. Most of the surface of _________ is covered with liquid water.

7. ___________ is about 30 times as far from the Sun as our own planet.

8. The planet with the lowest average density is ___________.

Physics & Space Science

Radiation darkening is a likely explanation of:

A) why Uranus' moons are less reflective than Saturn's. B) the lack of distinct, visible bands in Uranus' atmosphere. C) Uranus' extreme axial tilt. D) the tilt of Uranus' magnetic field relative to the rotation axis. E) why Uranus' rings are so much fainter than Saturn's.

Physics & Space Science

Define mechanical work

What will be an ideal response?

Physics & Space Science

When steam condenses to water, energy is

A) absorbed. B) released. C) conserved as the phase change occurs. D) transformed to a different form.

Physics & Space Science